试题与答案

打开一个工作簿文件的操作步骤是()。A、执行“插入→文件”菜单命令,在对话框的“文件

题型:单项选择题

题目:

打开一个工作簿文件的操作步骤是()。

A、执行“插入→文件”菜单命令,在对话框的“文件名”输入框中选择需要打开的工作簿,单击[确定]按钮

B、执行“插入→文件”菜单命令,在对话框的“文件名”输入框中选择需要打开的工作簿,单击[取消]按钮

C、执行“文件→打开”菜单命令,在“打开”对话框的“文件名”输入框中选择需要打开的工作簿,单击[取消]按钮

D、执行“文件→打开”菜单命令,在“打开”对话框的“文件名”输入框中选择需要打开的工作簿,单击[打开]按钮

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析:严格按照运行规程规定对电缆夹层、通道进行巡检,并检测电缆和接头运行温度。

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题型:单项选择题

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。学科&网

Hundreds of people have formed impressions of you through that little device(装置) on your desk. And they’ve never actually   41   you. Everything they know about you   42   through this device, sometimes from hundreds of miles away.   43   they feel they can know you   44   from the sound of your voice. That’s how powerful the   45   is.

Powerful, yes, but not always   46  . For years I dealt with my travel agent only by phone. Rani, my faceless agent whom I’d never met   47  , got me rock-bottom prices on airfares, cars, and hotels. But her cold voice really   48   me. I sometimes wished to   49   another agent.

One morning, I had to   50   an immediate flight home for a family emergency. I ran into Rani’s office   51  . The woman sitting at the desk,   52   my madness, sympathetically jumped up. She gave me a   53   smile, nodded while listening patiently, and then printed out the   54   immediately. “What a wonderful lady!” I thought.

Rushing out   55   I called out over my shoulder, “By the way, what’s your name?” “I’m Rani,” she said. I turned around and saw a   56   woman with a big smile on her face waving to wish me a safe trip. I was   57  ! Why had I thought she was cold? Rani was, well, so   58  .

Sitting back in the car on the way to the airport, I figured it all out. Rani’s   59  ---her warm smile, her nods, her ‘I’m here for you’   60  ---were all silent signals that didn’t travel through wires.

52()

A.expecting

B.seeing

C.testing

D.avoiding

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题型:实验题

四氯化锡常温下是无色液体,在空气中极易水解,熔点-36℃,沸点114℃,金属锡的熔点为231℃。装置A中放浓盐硫,B中放MnO2,二者用于制氯气,用熔融的金属锡跟干燥的氯气直接作用制取无水四氯化锡(此反应过程放出大量的热)。请回答下列各问题。

(1).上图中气体发生和尾气处理装置不够完善,请你提出改进意见_______________________________。

利用改进后的正确装置进行实验,请回答下列问题:

(2)H中反应的离子方程式:_________________________________________________;

E中反应的化学方程式:________________________________________________。

(3)C、D中的试剂分别是_______________、____________________。

(4)仪器A、B的名称分别是_____________、____________,F的作用是_____________。

(5)实验时应先点燃_________处酒精灯,加热温度应大于________ ℃,待________,即可停止加热。

(6)已知四氯化锡遇水强烈水解,产物之一是固态二氧化锡,那么四氯化锡水解的化学方程式为________________________________________________________________。

(7)如果将制取的四氯化锡少许暴露于空气中,预期可看到的现象是___________________________。

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